2. Micro USB Connector for Convenient Charge
Compatible with charger of iphone, android and compatible with computer usb and power bank, which enables you to charge the mini rotary tool at any time,
charging 2 hour for continuous work 90 min, 3.7 V rechargeable lithium battery for safe operation.

Features:
1. USB charging cable fit for almost all household charging facility interface, such as power bank, computer and so on, which is more comfortable to charging.
2. 3 Speed(5000, 10000, 15000rpm), hich allows you to finish polishing, cleaning, engraving.
3. Lightweight but great power for work.